The Ryobi RY40660 is the flagship cordless hedge trimmer kit in Ryobi's 40V HP Whisper Series, combining a 26-inch dual-action blade with 1.5 in. cut capacity, a 40V 2.0 Ah battery, a rapid charger, a HEDGESWEEP debris remover, and a blade scabbard. The Whisper Series magnesium gearbox keeps operating noise lower than conventional 40V trimmers while still delivering the full power of the 40V HP brushless motor through branches up to 1.5 in. thick — the highest cut capacity of any trimmer in Ryobi's cordless lineup. At 11.2 lbs, it is the heaviest of the cordless hedge trimmers covered here, though the weight is a direct result of the additional power and longer blade. Backed by a 5-year limited warranty.
What comes in the RY40660 kit?
The RY40660 includes the RY40606BTL Whisper Series 26-inch hedge trimmer, one 40V 2.0 Ah lithium-ion battery, a 40V rapid charger, a HEDGESWEEP debris remover, and a blade scabbard. It is a fully equipped kit with no additional purchases required to start trimming.
What is the maximum branch size the RY40660 can cut?
The RY40660 handles branches up to 1.5 in. in diameter, which is the largest cut capacity of any Ryobi cordless hedge trimmer. This makes it the right tool for thick, overgrown hedges and mature shrubs that exceed the 0.75 in. to 1.0 in. limits of lighter 18V models.
Why does the RY40660 weigh more than other Ryobi hedge trimmers?
At 11.2 lbs with battery, the RY40660 is the heaviest trimmer in this lineup. The weight comes from the larger 40V battery, the longer 26-inch blade, and the magnesium gearbox components. For most homeowners, the added weight is a worthwhile trade-off for the cutting power and reduced noise the Whisper Series delivers.
Is the 40V battery from the RY40660 compatible with other Ryobi 40V tools?
Yes. The included 40V 2.0 Ah battery works with all tools in Ryobi's 40V HP platform. If you already own a 40V lawn mower, string trimmer, or blower, the RY40660 kit adds a useful compatible battery to your collection. Conversely, the kit is a good entry point into the 40V ecosystem.
How does the RY40660 Whisper Series compare to the standard RY40640 kit?
The RY40660 offers two significant upgrades over the standard RY40640: quieter operation through the magnesium gearbox Whisper Series engineering, and a larger 1.5 in. cut capacity versus 1.0 in. Both kits include similar accessories (HEDGESWEEP and scabbard). If you are trimming thick hedges in a noise-sensitive area, the RY40660 is the better choice. For standard-thickness hedges where noise is less of a concern, the RY40640 provides good value at a lower price.
# Ryobi 40V HP Brushless Whisper Series 26 in. Hedge Trimmer Kit (2.0 Ah) **Model:** `RY40660` **Brand:** Ryobi **Category:** Hedge Trimmer > The Ryobi RY40660 is the flagship cordless hedge trimmer kit in Ryobi's 40V HP Whisper Series, combining a 26-inch dual-action blade with 1.5 in. cut capacity, a 40V 2.0 Ah battery, a rapid charger, a HEDGESWEEP debris remover, and a blade scabbard. The Whisper Series magnesium gearbox keeps operating noise lower than conventional 40V trimmers while still delivering the full power of the 40V HP brushless motor through branches up to 1.5 in. thick — the highest cut capacity of any trimmer in Ryobi's cordless lineup. At 11.2 lbs, it is the heaviest of the cordless hedge trimmers covered here, though the weight is a direct result of the additional power and longer blade. Backed by a 5-year limited warranty. ## Specifications | Attribute | Value | |---|---| | Product Type | Hedge Trimmer | | Voltage (V) | 40 | | Platform | 40V HP | | Cordless / Corded | Cordless | | Motor Type | Brushless | | Blade Length In | 26 | | Dual Action | Yes | | Cut Capacity In | 1.5 | | Strokes Per Min | 3,200 | | Tool Only | No | | Batteries Included | 1 | | Battery Ah | 2 | | Battery Included | Yes | | Charger Included | Yes | | Weight (lbs) | 11.2 | | Warranty | 5-year limited | ## What's Included - (1) RY40606BTL Whisper Series Hedge Trimmer - (1) 40V 2.0 Ah Lithium-Ion Battery - (1) 40V Rapid Charger - (1) HEDGESWEEP Debris Remover - (1) Scabbard Source: https://www.jaspecs.com/ryobi/hedge-trimmer/ry40660-ryobi-40v-hp-brushless-whisper-series-26-in-hedge-trimmer-kit/